diff -r 000000000000 -r 6474c204b198 browser/components/tabview/test/browser_tabview_bug616967.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/tabview/test/browser_tabview_bug616967.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  waitForExplicitFinish();
+
+  let branch = Services.prefs.getBranch('browser.panorama.');
+  branch.setBoolPref('experienced_first_run', false);
+  
+  newWindowWithTabView(function (win) {
+    is(win.gBrowser.visibleTabs.length, 1, 'There should be one visible tab, only');
+
+    win.TabView._initFrame(function () {
+      is(win.gBrowser.visibleTabs.length, 1, 'There should be one visible tab, only');
+
+      win.close();
+      finish();
+    });
+  });
+}